(0 19 15 9 2)(1 7 3)(4 17 14 11 8)(5 20 6)(10 13 12)(16 21 18)
ALLOWS (11/8)-SEQUENCE
1: (0 1 2)
(0)(1 19 15 9 2 7 3)(4 17 14 11 8)(5 20 6)(10 13 12)(16 21 18)
2: (2 7 9)
(0)(1 19 15 9 3)(2)(4 17 14 11 8)(5 20 6)(7)(10 13 12)(16 21 18)
3: (4 17 8)
(0)(1 19 15 9 3)(2)(4)(5 20 6)(7)(8 14 11)(10 13 12)(16 21 18)(17)
4: (1 9 3)
(0)(1)(2)(3)(4)(5 20 6)(7)(8 14 11)(9 19 15)(10 13 12)(16 21 18)(17)